Various functions for cache consistency.
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Various functions for cache consistency.
- Include File
#include <l4/sys/cache.h>
◆ l4_cache_clean_data()
int l4_cache_clean_data |
( |
unsigned long |
start, |
|
|
unsigned long |
end |
|
) |
| |
|
inline |
Cache clean a range in D-cache.
- Parameters
-
start | Start of range (inclusive) |
end | End of range (exclusive) |
- Return values
-
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Writes back any dirty cache lines in the range but leaves them in the cache.
- Examples:
- examples/libs/l4re/c++/shared_ds/ds_clnt.cc.
Definition at line 84 of file cache.h.
◆ l4_cache_coherent()
int l4_cache_coherent |
( |
unsigned long |
start, |
|
|
unsigned long |
end |
|
) |
| |
|
inline |
Make memory coherent between I-cache and D-cache.
- Parameters
-
start | Start of range (inclusive) |
end | End of range (exclusive) |
- Return values
-
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Definition at line 108 of file cache.h.
◆ l4_cache_dma_coherent()
int l4_cache_dma_coherent |
( |
unsigned long |
start, |
|
|
unsigned long |
end |
|
) |
| |
|
inline |
Make memory coherent for use with external memory.
- Parameters
-
start | Start of range (inclusive) |
end | End of range (exclusive) |
- Return values
-
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Definition at line 116 of file cache.h.
◆ l4_cache_flush_data()
int l4_cache_flush_data |
( |
unsigned long |
start, |
|
|
unsigned long |
end |
|
) |
| |
|
inline |
Cache flush a range.
- Parameters
-
start | Start of range (inclusive) |
end | End of range (exclusive) |
- Return values
-
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Writes back any dirty cache lines and invalidates all cache entries in the range.
Definition at line 92 of file cache.h.
◆ l4_cache_inv_data()
int l4_cache_inv_data |
( |
unsigned long |
start, |
|
|
unsigned long |
end |
|
) |
| |
|
inline |
Cache invalidate a range.
- Parameters
-
start | Start of range (inclusive) |
end | End of range (exclusive) |
- Return values
-
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Invalidates all cache entries in the range but does not necessarily write back dirty cache lines.
- Note
- Implementations may choose to write back dirty lines nonetheless if this is more efficient.
Definition at line 100 of file cache.h.